DETECTION OF NATURAL OSCILLATION FREQUENCIES AND COEFFICIENTS OF RELATIVE DAMPING OF DYNAMIC SYSTEM AT MILLING BY METHOD OF OPERATION MODAL ANALYSIS
Abstract and keywords
Abstract (English):
Rassmatrivaetsya problema identifikacii tehnologicheskoy sistemy pri frezerovanii metodom operacionnogo modal'nogo analiza po izvestnomu signalu otklika na neizvestnoe vozbuzhdenie. Na pervom etape reshaetsya zadacha vyyavleniya sobstvennyh chastot dinamicheskoy sistemy metodom razlozheniya v chastotnoy oblasti matricy vzaimnoy spektral'noy plotnosti signalov. Na vtorom etape vychislyayutsya koefficienty otnositel'nogo dempfirovaniya. Predlozhennyy algoritm prodemonstrirovan na modeli dvuh svyazannyh oscillyatorov, a takzhe primenen dlya identifikacii real'noy tehnologicheskoy sistemy pri frezerovanii.

Keywords:
operacionnyy modal'nyy analiz, sobstvennaya chastota kolebaniy, koefficient otnositel'nogo dempfirovaniya, dinamicheskaya sistema, vibracii, ustoychivost', avtokolebaniya, frezerovanie
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References

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